baber/WOPTO huggingface dataset:
Patent GB-883731-A (GB)
Title: Rubbery copolymers
IPC: C08F8/20
Filed: 1958-12-24
Abstract: A synthetic rubber comprising a cured brominated rubber amorphous copolymer of ethylene and a higher alpha-olefin is prepared by reacting the copolymer with a brominating agent in a solvent capable of at least partially dissolving or swelling the copolymer and then curing.  Specified curing agents are metal salts, metal oxides, metal powders, amines and polyamines. Ethylene-propylene is the preferred copolymer.  Bromine is the preferred brominating agent, although N-bromo-succinimide is also mentioned, while aliphatic and aromatic hydrocarbons and their halogenated derivatives are used as solvents. Fillers, such as carbon black, silica, mica and various clays may preferably be present, e.g. in amounts from 5 to 150 parts per 100 of brominated copolymer.  Specifications 799,392 and 868,022 are referred to.
Patent GB-1275441-A (GB)
Title: A trap device for rapidly securing a probe
IPC: B64F1/04
Filed: 1969-08-21
Abstract: 1275441 Trap device for an aircraft anchoring probe CANADA MINISTER OF NATIONAL DEFENCE 21 Aug 1969 [4 Sept 1968] 41728/69 Heading B7G [Also in Division E2] The subject-matter of this Specification is identical with that of Specification 1,275,442 but the claims are concerned with the releasable holding means.
Patent GB-1209185-A (GB)
Title: Improvements relating to solenoid-operated fluid flow control valves
Inventor: FELLOWS WILLIAM FREDERICK
IPC: F16K31/06
Filed: 1967-09-14
Abstract: 1,209,185. Valves. WELLMAN INDUSTRIAL CONTROLS Ltd. 14 Oct., 1968 [14 Sept., 1967], No. 41951/67. Heading F2V. A valve comprises two closure members 16, 20 each actuated by a solenoid 30, 34, and having a stop 35 which co-acts with a resilient ring 42 to act as a buffer. The stop has a conical recess 38 and the ring 42 locates in a groove in a conical end of the armature, so as to extend therefrom and provide a clearance 50 in the extreme position of the armature. The closure members are connected to the armatures by resilient members 31, and diaphragms 48 seal the armatures from the valve passageways.
Patent GB-1039029-A (GB)
Title: Improvements in and relating to haymaking machines
IPC: A01D78/10
Filed: 1963-10-24
Abstract: 1,039,029. Haymaking machines. MASCHINENFABRIK FAHR A.G. Oct. 24, 1963 [Oct. 31, 1962], No. 42000/63. Heading A1F. A haymaking machine is characterized by the combination of a rotary rake-head haymaker having two pairs of positively driven rake-heads 3, 4 with two rakewheels 14 arranged behind the rotary rakeheads to combine the swaths produced by these heads. The outer arms 6 of the frame carrying the rake-heads are pivotal about vertical axis by means of hinges 7 and can be locked by clamping screws 8. Hinges 9 connect the frame 10 of the rakewheels to the frame 1 of the haymaker to allow vertical pivotal movement. A ground wheel 11 supports the frame 10. In an embodiment, the rake-wheels are supported on an adjustable frame one behind the other to act as a side delivery rake whereby only one swath is moved to be combined with the second swarth.
Patent GB-1472612-A (GB)
Title: Process for filling moulds with reaction mixtures into a closed mould cavity
IPC: B29C45/00
Filed: 1974-09-27
Abstract: 1472612 Moulding foams BAYER AG 27 Sept 1974 [27 Sept 1973] 42029/74 Heading B5A To prevent the formation of surface bubbles when moulding an integral skin foam by filling a closed mould with a foam reaction mixture having a viscosity in the range 100-2500 cP, the reaction mixture is fed through an opening 1 on to the opposite mould wall in such a manner that the equation ws/##0À5 (preferably 0À1) is satisfied, where w = the flow rate of the mixture away from the opening in m./sec., s = the separation of the mould walls at the feed opening during feeding in mm., and # = the viscosity of the reaction mixture in cP, and the separation of the mould walls at least during mould filling is between 0À5 and 15 mm. A portion 3 of the mould wall may be retracted by an hydraulic piston and cylinder 4 on completion of mould filling so that thicker articles may be moulded. Alternatively (Figs. 3-6, not shown) the portion of the wall containing the feed opening (5) or the opposite wall may permanently protrude to reduce the mould wall separation s and hence the thickness of the moulded article in the region of the feed opening. The feed opening may be round or rectangular and be placed at one edge or in the corner of the mould. The feed direction is normal to the opposite mould wall or inclined thereto preferably at not less than 60 degrees. The feed direction is arranged to be vertically upwards or downwards or downwardly at 45 degrees. Polyurethane foams based on unsaturated polyesters, epoxide resins or polyisocyanurates are moulded.
Patent GB-1511039-A (GB)
Title: Measuring capacitance
IPC: G01R27/26
Filed: 1976-10-14
Abstract: 1511039 Measuring capacitance FERRANTI Ltd 14 Oct 1976 [15 Oct 1975] 42349/75 Heading G1U [Also in Division H3] A capacitance 26, Fig. 2, to be measured, is made the feedback path of an amplifier 21 forming part of a sawtooth Fig. 3 oscillator, the input voltage 32 to the amplifier 21 (which, with the capacitance to be measured, functions as an integrator) being reversed in polarity whenever the output voltage of the amplifier 21 becomes equal to a positive, or a negative, threshold level, and the period of the sawtooth, which varies linearly with the unknown capacitance, is measured. As described, the output voltage V of the amplifier 21 is compared with the input voltage E to the amplifier at a summing node 36 of an amplifier 38, and when V = -E (giving zero volts at the node 36) the polarity of the input voltage is reversed. The time between successive reversals of polarity, which varies linearly with the unknown capacitance, can be measured either automatically, or, (as in Fig. 4, not shown) a light-emitting diode can be caused to glow whenever the input voltage is positive, and the time between successively glows can be determined using a stop-watch.
Patent GB-1355669-A (GB)
Title: Retroreflective material
IPC: B32B7/02
Filed: 1971-09-13
Abstract: 1355669 Laminates; moulding reflectors ROWLAND DEVELOPEMENT CORP 13 Sept 1971 [29 Sept 1970] 42530/71 Headings B5N and B5A [Also in Division B2] A retroreflective composite synthetic plastic material comprises a body portion 10 having substantially parallel, smooth surfaces on opposite side thereof and a multiplicity of minute cube corner formations 12 closely spaced about and projecting from one of the smooth surfaces, the cube corner formations each having three faces and a base adjacent the body portion with a side edge dimension of not more than 0À025 inch and the close spacing avoiding any substantial smooth areas therebetween, the body portion and the cube corner formations being separately formed from transparent synthetic plastic resin, the cube comer formations being warded against the body portion and being bonded therewith into a composite structure in which those light rays entering into the material through the other surface 14 of the body portion predominantly pass through the body portion and into the cube comer formations by which they are reflected back through the composite structure substantially parallel to the path of entry. Each cube corner formation may have one face parallel to one face of every other cube corner formation, the cube corner formations being substantially equal in size and arranged in a pattern of rows and columns in which the centreto-centre spacing between cube corner formations in every row and every column is in accordance with a uniform pattern. The composite material may be made by depositing hardenable transparent synthetic plastic moulding material on a mould surface, preferably of metal, having an array of contiguous cube corner recesses therein, applying thereto with pressure a preformed body member of transparent synthetic resin, e.g. a flexible sheet, and effecting solidification of the moulding material and bonding thereto of the body member, e.g. by cooling, crosslinking of the resin or completing polymerization of the resin. The resin used for the cube corner formations and body portions may be polymethyl methacrylate or polybutyl acrylate, cellulose acetate or propionate, cellulose acetate/butyrate, polyvinyl chloride or fluoride, polyvinylidene chloride, polystyrene, styrene / acrylonitrile copolymer, polyacrylonitrile, polycarbonates, polyethylene terephthalate, polyphenylene oxide, polsulphones, polyethylene, polypropylene or vinyl chloride/ vinyl acetate copolymers. A reflective coating 30, e.g. aluminium applied by vapour deposition, pearl lacquer or metallized plastic film, may be deposited on the faces of the cube corner formations and may be given a protective resin coating applied by spraying or roller coating. An adhesive layer 32 may be deposited on the reflective coating and covered with a removable sheet material 34, e.g. a release paper or plastic film, so that after removal of this sheet material the retroreflective composite structure may be adhered to a substrate.
Patent GB-901856-A (GB)
Title: Polishing device with a reservoir for polishing liquid
IPC: A47L13/22
Filed: 1960-12-10
Abstract: 901,856. Liquid applicators; hand-tool handles. VOSBIKIAN, P. S., and VOSBIKIAN, T. S. Dec. 10, 1960, No. 42592/60. Classes 19 and 61. [Also in Group XXIX] A polishing device comprises a handle 1 containing the polishing fluid and having a discharge port 9, a resilient valve sleeve 11 encircling the handle and covering the port 9, the sleeve 11 having a discharge port 10, and a valve actuating member 13 mounted on the handle and connected at 16 to the valve sleeve to expand the sleeve portion at the ports away'from the handle and effect communication between the ports 9 and 10. An air vent may be provided by turning a cap 17 so that a port 18 therein registers with a port in the handle.
Patent GB-1202193-A (GB)
Title: Apparatus for treating the feet of livestock
Inventor: JONES RICHARD WILLIAM
IPC: A61D3/00
Filed: 1966-09-23
Abstract: 1,202,193. Spraying animals. F. W. McC ONNEL Ltd. and R. W. JONES. 25 Sept., 1967 [23 Sept., 1966], No. 42598/66. Heading A1M. [Also in Division A5] Apparatus for treating the feet of livestock comprises a platform or structure for supporting the livestock, means 12, 28 on the platform or structure for locating and supporting the feet so that a horny portion on each foot is exposed, and mechanical means 21 on the platform or structure for abrading or cutting the horny portions of the feet, the mechanical means being beneath the locating and supporting means. As shown, for abrading the feet 29 of a sheep, the apparatus comprises four moving belts 21 for abrading the feet while they are located between two pairs of oppositely inclined surfaces 28 and while they are supported on two members 12. The feet are also held between adjustable rollers 31 and the members 12 are shaped with a ridge 13 to separate the two parts of each cloven hoof and with horizontal flanges 14 shaped to allow only the horny part of each hoof to contact the abrasive belt. The apparatus is mounted in a structure (Fig. 1, not shown) for holding each sheep and having entrance and exit gates and parts (not described in detail) which close about the neck of the animal. The members 12 supporting the animal's feet may be tubular and perforated and used to spray the feet with a liquid which combats foot rot. A hydraulic or electric motor may be used to drive the abrasive belts. It is stated that instead of the abrasive belts, the apparatus may be provided with grinding wheels or with abrasive discs for abrading the feet, and that the abrading elements may have a continuous or a reciprocatory motion. Auxiliary units for spraying the mouth or fleece of the animal may be provided on the apparatus.
Patent GB-1080332-A (GB)
Title: Method of and apparatus for producing plastic tubing
IPC: B29C48/90
Filed: 1964-10-20
Abstract: 1,080,332. Films; quenching extruded tubing. J. TAGA. Oct. 20, 1964 [Oct. 22, 1963; Nov. 17, 1963], No. 42804/64. Headings B5A and B5B. Plastic tubing is made by extruding a molten thermoplastic material in tubular form, the tubing being inflated by gas, and continuously withdrawing the inflated tubing in a substantially vertical direction through an opening in a quenching member, and directing a stream of quenching liquid over the quenching member in a direction having a component in an inward radial direction, to contact the outer surface of the tubing so that the quenching liquid is continuously changed in such a manner that the volume of quenching liquid carried by the quenching member remains constant and the surface of this quenching liquid remains smooth so that the tubing is quenched uniformly without wrinkles or streaks on its surface. Thus, as shown, in Fig. 1, the liquid is horizontally, centripetally and continuously supplied over the quenching disc 4 from an annular slit opening 10 provided circumferentially around the quenching disc. This liquid is introduced at 16, the rate of flow being regulated by valve 17, and ripples are prevented from reaching the film by the circumferential wall 15. Liquid passes to the film surface as indicated by the arrows, and drains over the weir 20 into annular trench 21, formed by weir 20 and flange 18, and is removed at 22. Flange 18 is in threaded engagement with wall 19 and this permits the depth of liquid surrounding the film to be varied. Quench ring 4 fits as shown into the annular wall 12 and can be readily removed and replaced by a quenching disc having a central opening of different diameter. In the apparatus of Fig. 3, the liquid 9 is upwardly and continuously supplied along the external surface of the tubing from an annular slit opening 10 provided circumferentially around the quenching disc 4 so that the surface of the liquid is swollen by surface tension. Specified thermoplastic materials include polyethylene, polypropylene, polyamides and polyvinylidene chloride. Specified quench liquids include water.
Patent GB-1283622-A (GB)
Title: Improvements in or relating to coke ovens
IPC: C10B29/02
Filed: 1970-09-08
Abstract: 1283622 Refractory bricks for coke ovens BERGWERKSVERBAND GmbH 8 Sept 1970 [21 April 1970] 42945/70 Heading F4B The heating flues and coking chamber walls of a coke oven are made of brickwork having at 1200‹ C. a heat conductivity of 2À0-6À0 k. cal./ metre/hr./‹C. and preferably 3À0-4À5 k. cal./ metre/hr./‹C. These bricks may comprise magnesite or 20-45% SiC, the balance being SiO 2  plus trace oxides. The latter may also include 23-57% Al 2 O 3  and the wall thickness is 40-80 mm., preferably 50-65 mm.
Patent GB-1087552-A (GB)
Title: Method for manufacturing polyesters
IPC: C08G63/68
Filed: 1964-10-21
Abstract: Polyesters of high melt viscosity are prepared by reaction in the presence of ester-interchange and polycondensation catalysts of (a) a dicarboxylic acid or ester thereof, or a hydroxycarboxylic acid or ester thereof or a carbonic acid derivative with (b) a dihydroxy compound or ester thereof, there being present in addition to the above catalysts a compound AlXYZ, where X, Y and Z are each independently a halogen atom or hydroxy group or C1- 4 alkoxy or hydroxyalkoxy group, added at any stage befor the polymerization. The aluminium compound suitably amounts to 0.01-10 mol per cent of component (a), and may be e.g. aluminium methoxide, ethoxide, isopropoxide hydroxyethoxide, chloride or bromide.  Suitable components for the polyesters are adipic, azelaic, sebacic, phthalic, isophthalic, terephthalic, naphthalene - 2:6 - dicarboxylic and cyclobutane-1:2-dicarboxylic acids; ethylene, diethylene, polyethylene, propylene, butylene and neopentyl glycols and cyclohexane dimethanol; p-hydroxybenzoic, p-hydroxyethoxybenzoic, p-hydroxyethoxy-m-chlorobenzoic, vanillic and glycolic acids; and carbonic acid derivatives.  Other suitable additives include metal salts, TiO2, C black, anhydrous silicic acid, copper, phthalocyanines, H3PO3, H3PO4, and triphenyl phosphate or phosphite. In examples dimethylterephthalate and ethylene glycol are condensed (together with p-hydroxy benzoic acid dimethyl ester in Example 4 and bishydroxyethyl) adipate in Example 6) i.p.o. calcium or cobalt acetate and Sb2O3, and optionally with added TiO2 and/or triphenyl phosphate, i.p.o. also of AlCl3 or Al(OEt)3 or Al(Oi-Pr)3 or an AlCl3-ethylene glycol reaction product.  The products have relative viscosities in o chlorophenol of 9.5-11.0 and melt viscosities of 920-1900 poises.
Patent GB-1408937-A (GB)
Title: Pilot signal transmission systems
IPC: H04L27/02
Filed: 1972-09-15
Abstract: 1408937 Digital transmission; synchronizing FUJITSU Ltd 15 Sept 1972 [18 Sept 1971 13 Nov 1971] 43005/72 Heading H4P A transmitted multi level signal is accompanied by an in phase synchronizing pilot signal of half symbol rate, or other integral fraction of the Nyquist frequency, which is extracted at a receiver by a symmetrical narrow pass filter and which may be cancelled by an anti phase, e.g. flat topped signal of similar frequency, i.e. a rectangular or trapezoidal wave. At the transmitter (Fig. 4) a multilevel signal from T is modulated by a sinusoidal carrier at M to provide a both sideband signal which is rendered by a band filter BF into a VSB signal. Carrier may be optionally added at the output of filter BF. At a receiver, Fig. 4, a narrow band filter CF feeds a phase control led oscillator PLL the output from which is mixed in a demodulator from the output of which a low pass filter LF extracts the lower side band; this contains a D.C. component which is cancelled by a source D.C. Alternatively the threshold level of the demodulated output can be changed. In another receiver embodiment, Fig. 10, part of amplifier AMP waveform is applied to timing signal extraction circuit TM through which a rectangular wave generating circuit and a clock circuit are controlled, and part to a sample hold circuit SH controlled by clock signals the output passing through a comparator for multi level decoding and waveform shaping circuit FS. A reference voltage may be supplied by LD. The rectangular wave output terminal Z may be connected to any one of terminals A, B, C or D in order to erase the pilot signal.
Patent GB-1446169-A (GB)
Title: Arc-weldingh electrode
IPC: B23K35/02
Filed: 1972-09-18
Abstract: 1446169 Welding fluxes BOC INTERNATIONAL Ltd 18 Sept 1973 [18 Sept 1972] 43100/72 Heading C7M [Also in Division B3]  In a flux coated consumable electrode, for underwater welding, the flux includes by weight of the flux (excluding binder), 20-30% Mn as metal and/or in an alloy (e.g. Fe-Mn, Si-Mn), and the ratio of the coated electrode diameter to the core diameter is at least 1.6:1, e.g. 1.6 to 2.2:1. The electrode core may be rod or wire and may comprise Si-containing mild steel. The flux may include one or more of Mo, Nb, Cr, Ni, Co, Ti, Al, W and V, one or more of iron powder, an alkaline earth metal carbonate, silica, zirconia, potassium oxide, alumina, and a complex of at least two such oxides, and a silicate. Preferred fluxes include The deposited weld metal may contain 0À5- 2.5% Mn and 0À20-0À65% Si.
Patent GB-1400397-A (GB)
Title: Fuel injection system for an internal combustion engine
IPC: F02B51/04
Filed: 1971-09-17
Abstract: 1400397 Automatic control of injection LUCAS ELECTRICAL CO Ltd 8 Sept 1972 [17 Sept 1971] 43377/71 Heading G3N [Also in Division F1] A control unit substantially identical to that disclosed in Specifications 1321989 and 1321990 is described and claimed in combination with a Piezo-electric or magnetostrictive fuel injection pump, the details of which pump are also described, see Division F1.
Patent GB-919293-A (GB)
Title: Static exciting arrangement for synchronous electric generators
IPC: F26B11/18
Filed: 1959-12-22
Abstract: 919,293. Automatic voltage control; alternators. LLOYD DYNAMOWERKE A.G. Dec. 22, 1959 [Dec. 22, 1958], No. 43534/59. Classes 35 and 38 (4). A synchronous electric generator has a static exciting arrangement comprising an airgap choke connected on one hand to a terminal of the generator and on the other hand to a rectifier for the excitation current and a current transformer having a secondary winding connected in parallel with the air-gap choke and a second primary winding energized from a transductor controlled in dependence on the parameters of the current in the mains supplied by the generator. As shown, a field winding 15 of a generator 11 is energized, through a rectifier 14, in dependence on the line voltage through an air-gap choke 12 and in dependence on the line current from a secondary 20 of a current transformer 13. An auxiliary winding 21 of the current transformer is energized from a tapping on the choke 12 through a working winding 23 of a transductor 16. A control winding 22 of the transductor is energized through a rectifier 17 from a control device 18, responsive to the generator voltage, so as to maintain the generator voltage constant by inducing a voltage in the secondary 20 tending to reduce the current flowing through the field winding 15. The control device 18 may be additionally responsive to the power-factor of the generator output.
Patent GB-1347790-A (GB)
Title: Medical test data entry terminal
IPC: G06F19/00
Filed: 1971-09-20
Abstract: 1347790 Selective signalling SEARLE MEDIDATA Inc 20 Sept 1971 [21 Sept 1970] 43692/71 Heading G4H A data terminal for the entry of medical test data into a computer-based medical record of a patient, comprises: a plurality of test buttons each representing a respective medical test, the results of which are to be entered into the medical record; a numeric keyboard; means to assemble digital signals representing the key and button actuations into data words for transmission to a computer; means for decoding data words received from the computer, and for displaying numeric data, and messages indicative of terminal operation, both decoded from the words from the computer; means for visually indicating subsequent steps to be taken by a terminal operator in entering data; means for manually causing entry of data into the medical record after visual verification thereof; and means operative in response to an identification code for enabling terminal operation. A card reader in the terminal reads the identification code, representing the operator (or in a modification, the patient) and the computer enables operation of the terminal if this code is permissible. The numeric keyboard is for entry of a patient number, and the results of medical tests, these being sent to the computer and returned for display (by Nixie tubes) at the terminal, for verification. A check digit can also be entered. The test identities, entered on the test buttons, are also sent. When the corresponding test results have been received by the computer, the computer lights lamps in the buttons. After verification, the operator can cause the information to be entered into the medical record by pressing an "enter" key. The computer may indicate the next test by lighting the appropriate test button lamp. Lamps and a rear projection display all controlled by the computer, give instructions and information to the operator. A shift register in the terminal is used for communication, in both directions, with the computer. The words sent from the computer include the terminal address, since other terminals can be connected to the same transmission link. Print out is provided. The terminal also includes buttons to retain a patient identity entered, for a series of tests, and a test identity, for a series of patients. Information sent to the terminal by the computer is sent back for a check comparison, error being indicated on the rear projection display. The computer compares test results with predetermined limits and signals out-of-limit conditions on the rear projection display.